Paper-making machine



IN VEN TOR 4% A TTORNE I [6246/1 I fizzy R A HAYWARD PAPER MAKINGMACHINE Filed Aug. 17, 1928 Aug. 12, 1930.

Patented Aug. 12, 1930 UNITED STATES PATENT OFFICE,

RALPH A. HAYWARD, OF KALAMAZOO, MICHIGAN, ASSIGNOR TO KALAMAZOO VEGE- ITABLE IPABCHMENT COMPANY, OF KALAMAZOO, MICHIGAN PAPER-MAKING MACHDN'EApplication tiled August 11, 1928. Serial 110. 300,227;

The main object of this invention is to provide in a paper makingmachine means enabling the forming of the web of paper withcomparatively straight edges and of unlform width without deckle straps.

Objects pertaining to .details and economies of my invention willdefinitely appear from the description to follow. The invention isdefined-in the claims.

A structure which embodies the features of my invention is clearlyillustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary side elevatlo npf a paper making machine of theFourdrimer type embodying myimprovements, parts being shown mainly inconventional form.

Fig. 2 is a fragmentary view partially in section on line 22 of Fig. 1,no attempt being made to illustrate the mesh of the forming wire.

Fig. 3 is a detail view partially in sect on on line 33 of Fig. 1, theforming wire being conventionally shown.

In the embodiment shown in the accompanying drawing, 1 represents thefeed means and 2 the shaker frame carrying the breast roll The formingwire is conventionally shown at 4. Adjacent the breast roll I provide aplurality of forming wire sup- .porting rollers 5 having inwardlytapering conical ends 6, the taper being of suflicient degree and ofsuch length as to support the edges 7 of the forming wire in an inwardlyinclined relation to the body portion thereof.

The flow boards 8 overhang the front ends of the forming wire to retainthe stock as it is delivered on to the forming wire.- Theupwardlyinclined edge portions of the forming wire effectively prevent thestockspreading out over the edge under the shaking action of the shakerframe, and by the time the stock reaches the supporting rollers 9,

which are of uniform dimensions from endto end and disposed at the rearof the supporting rollers 5, the web 10 issufliciently I haveillustrated and described my improvements in conventional form as it isbelieved the disclosure made will enable those skilled in the art toembody or adapt my improvements as may be desired.

Having thus described my invention what I claim as new and desire tosecure by Letters' Patent is:

1. The combination in a paper making ma chine including a shaker frame,a forming wire and means for delivering pulp to said forming wire, of aplurality of supporting rollers for said forming wire disposed adjacentsaid feed means, said supporting rollers having central portions ofuniform diameter and outwardly expanding end portions acting to supportthe edges of the wire in an inwardly inclined position.

2. The combination ,in a paper making machine including a shaker frameand forming wire, of a plurality of supporting rollers for said formingwire carried by said shaker frame and provided with inwardly taperingend portions supporting the edges of the forming wire.

3. In a paper making machine, the combination of a forming wireandcoacting breast roll, of a plurality of supporting rollers for saidforming wire disposed adjacent means for supporting the edges of theforming wire adjacent said feed means in an inwardly inclined relationto the main body wire.

In witness whereof Ihave hereunto set my hand.

RALPH A. HAYWARD.

